44. We can learn from the last paragraph that social robots will ______.

　　A. train employees

　　B. be our workmates

　　C. improve technologies

　　D. take the place of workers

　　45. What does the passage mainly present?

　　A. A new design idea of household robots.

　　B. Marketing strategies for social robots.

　　C. Information on household robots.

　　D. An introduction to social robots.

　　10.【2015·浙江】C

　　If humans were truly at home under the light of the moon and stars，we would go in darkness happily，the midnight world as visible to us as it is to the vast number of nocturnal(夜间活动的) species on this planet. Instead，we are diurnal creatures, with eyes adapted to living in the sun’s light. This is a basic evolutionary fact, even though most of us don’t think of ourselves as diurnal beings. Yet it’s the only way to explain what we’ve done to the night: We’ve engineered it to

　　receive us by filling itwith light.

　　The benefits of this kind of engineering come with consequences 一 called light pollution 一 whose effects scientists are only now beginning to study. Light pollution is largely the result of bad

　　lighting design，which allows artificial light to shine outward and upward into the sky.III-designed lighting washes out the darkness of night and completely changes the light levels 一 and light

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